Filling tension device for looms.



PA'TBNTED FEB. 24, 1903. B. F. LEE. FILLING TENSION DEVICE FOR LOOMS.

I LN I H a 4 \flfl \N. Q

APPLICATION FILED JULY 30, 1902.

r0 MODEL;

UNITED STATES PATENT (OFFICE.

BENJAMAN F. LEE, OF BELTON, SOUTH CAROLINA, ASSIGNOR TO DRAPER COMPANY,OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

FILLING TENSION DEVICE FOR LOOlVlS.

SPECIFICATION forming part of Letters Patent No. 721,206, dated February24, 1903.

Application filed July 30, 1902. Serial No. 117,597. (No model.)

To aZZ whom it may concern: ed on the rear end of the slide, the shipperS, Beit known thatI, BENJAMANF. LEE,acitiknock-E lever-7, Fig. 1, andthe weft-hamzen of the United States,and aresident of Belmer W may beand are all of usual or wellton, county of Anderson, State of SouthCarknown construction, the lay being provided 55 olina, have invented anImprovement in Fillwith a shuttle-box at each end, as usual, and

ing Tension Devices for Looms, of which the in Fig. 1 the top or coverplate 8 of the shutfollowing description, in connection with the tle-boxB is broken 0% at its inner end to accompanying drawings, is aspecification, show the back wall 9 thereof. The raceway like characterson the drawings representing of the lay is transversely recessed at 10oppo- 6o 10 like parts. site the fork 6, as is usual; but no grating orThis invention relates to looms for weaving; grid is employed in mypresent invention, as and it has for its object the production of I useother and novel'means fol-imparting to novel means for acting upon thefilling at the the filling the requisite tension when pretime thelatter, if properly laid, engages the sented to the filling-detector onthe detecting 65 I 5 usual filling-fork, so that the operation of thebeat of the lay.

latter is rendered more accurate and effective. Adjacent the guide 4 Imount on the breast- In order that the filling shall tilt thefork, itbeam a stand 12, and for convenience it may is common to provide the laywith a rack or rest upon the offset 11 of the guide 4, Fig. 1, grid tosupport the filling in front of the fork andthe stand is held in placeby set-screws 70 as the lay beats up, and sometimes this de-13,'extended through a slot 14 in the stand, vice has been reinforced byputting more tenthe latter being transverse to the breast-beam. sion onthe filling in the shuttle. Both of By means of the slot and set-screwsthe stand these devices are objectionable, because lint can be adjustedfore and aft relatively to the is liable to choke the grate and impairthe lay. I have shown the stand as provided 75 proper action of thefork, and owing to the with a longitudinal upturned web 15, Fig. 2,closeness of the grate-bars to each other any having at its outer end anear 16 and at its looseness in the lay or the fork-support will rear enda housing 17, (shown in section, Fig. cause the tines of the'fork tostrike the grate 1,) the ear being higher than the housing, and preventthe detecting action of the fork, and in said two parts I mount alongitudi- 80 while the increased tension on the filling innally-slidable member, shown as abar 18 19, the shuttle causes thefilling to pull too hard having a collar 20 fast thereon. The part 18 onthe selvage when the shuttle is going across is preferably made squarein cross-section, the lay. By my present invention I'am ensliding in acorrespondingly-shaped hole in abled to dispense entirely with the gratein the housing 17 to prevent any rotative move- 8 5 5 front of thefilling-fork and to avoid putting ment, and between the collar and thecar 16 any extra tension on the filling in the shuttle. the cylindricalpart 19 of the slidable mem- The various novel features of my inventionber is surrounded by a suitable coiled spring willbe hereinafterdescribed,and particularly s which normally maintains the parts in thepointed out in the following claims. position shown in the drawings.Atits rear exc Figure l'is a partial plan view of a loom, tremity themember 18 19 has mounted upon taken at the side on which thefilling-fork is itbyaspecies of knuckle-jointahead, (shown located, withone embodiment of my invenseparately in Fig. 3,) the head comprising ation applied thereto. Fig. 2 is an enlarged base 21, a projectingcentral web122, provided transverse sectional view on the line 2 2, Fig.with an enlarged extremity 23, and parts 24 95 1, looking toward theleft. Fig. 3 is an en- 25 of a knuckle-joint. Felt, cloth, leather,

larged perspective detail of the thread-engagor other suitablenon-metallic yielding mateing portion of the tension device to be derialis applied to the web, as shown atO, and scribed, and Fig. 4 is anenlarged plan view held in place by side plates 26, clamped to of amodification of the part shown in Fig. 3. the web by a suitable bolt 27.The end of the ma The lay 1,'breast-beam 3, guide 4 for the part 18 isoppositely shaped to the knuckle fork-slide 5,the filling-fork6,pivotally mountportion 24. 25 of the head to cooperate therewith, anda combined pivot and clamp-bolt 28 connects the head with the slidablemember, tightening of the bolt holding the head rigidly in adjustedposition on the member 18 19.

Referring to Fig. 2, it will be seen that the slidable member isinclinedto the horizontal in order that the head thereof may engage properly theback wall 9 of the shuttle-box as the latter beats up, and normally thehead is so located that as the lay heats up the head and back wall ofthe shuttle-box will engage prior to the instant at which the fillingwill engage the detector or fork 6 on the detecting heat.

It is understood that in the structure herein shown the filling-detectoroperates on alternate beats of the lay, as is common in looms.

Remembering that when the shuttle is in the adjacent or left-handshuttle-box B the filling t, Fig. 1, will extend from the edge of thecloth to the delivery-eye of the shuttle, it will be obvious that as thelatter beats up on the detecting beat the thread will be caught betweenthe covering or cushion C of the head on the slidable member and theback wall of the shuttle-box,and thereby clamped. This causes the threadto be held suificiently taut between the edge of the cloth and the pointat which it is clamped to enable it to present sufiicient resistance totilt the fork or detector, the spring s yielding as the forward movementof the lay moves the slidable member 18 19 toward the front of the lay.The collar 20 limits the rearward movement of said member as the layswings back.

The object of the grid commonly used is to support the fillingimmediately in front of the filling-detector, so that the filling willact upon and tilt the detector. By means of my present invention it willbe manifest that I entirely obviate the use of the grid or equivalentdevice, and thereby present a clear path for the tines of the fork ordetector as the lay beats up, and yet I provide the requisite tension onthe filling-thread to enable it to operate the fork properly. By makingthe covering 0 of the tension device non-metallic and of some soft oryielding material the thread is not damaged or broken no matter how softor fine the filling may be, and so, too, the latter is firmly heldbetween the covering 0 and the back wall of the shuttle-box at the timeit is clamped. By my invention I also obviate the use of any device tovary the tension of the filling in the shuttle, which latter isobjectionable, as hereinbefore pointed out.

In Fig. 4 the head 30 is connected by a knuckle-joint with the end 18 ofthe slidable member, substantially as hereinbefore described; but saidhead is cut away to leave a projecting check 31 and a recessed portion32, while a removable cheek-piece 33 is adapted to rest in the recessand be clamped therein by a suitable bolt 34. A cushion or block 35, offelt or other suitable yielding material, is clamped between the cheeks31 and 33 by means of a clamping-bolt 36,extended through the cheeks andthe cushion 35.

By the adjustable connection between the head and the slidable member Iam enabled to adjust the head so that the filling-engaging portionthereof will be practically in parallelism with the back wall of theshuttle-box when engaged thereby.

My invention is not restricted to the precise construction andarrangement herein shown, as the same may be modified or altered invarious details by those skilled in the art without departing from thespirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a loom, the lay, a shuttle-box thereon, a filling-detector movableacross the raceway of the lay adjacent the mouth of the shuttle-box asthe lay heats up, and means to clamp the filling between thefilling-detector and the shuttle when the latter is boxed.

2. In a loom, the lay provided with a shuttle-box, a shuttle, afilling-detector to detect presence or absence of the filling when theshuttle is in the shuttle-box, and means supported independently of thelay to clamp the filling adjacent and independently of the shuttle onthe detecting beat of the lay.

3. In a loom, the lay provided with a shuttle box, a shuttle, afillingdetector, and means independent of the shuttle to clamp thefilling adjacent the mouth of the shuttlebox when the shuttle istherein, and between the shuttle and filling-detector, on the forwardbeat of the lay, to maintain the filling taut when engaged by thefilling-detector as the lay heats up.

4. In a loom, the lay provided with a shuttle-box, ashuttle, afilling-detector, and yieldingly-mounted means independent of the layand the shuttle to act upon and maintain the filling taut when engagedby the filling-detector on the detecting beat of the lay.

5. In a loom, the lay provided with a shuttle box, a shuttle, a fillingdetector, and means to cooperate with the back wall of the shuttle-boxadjacent the month of the latter and clamp the filling on the detectingbeat of the lay, to present the filling taut to the filling-detector.

6. In a loom, the lay, a shuttle-box thereon, a filling-detector movableacross the raceway of the lay adjacent the mouth of the shuttleboX asthe lay heats up, a fixedly-mounted stand, and a yieldingly supportedfillingclamp on the stand, to engage and hold the filling adjacent themouth of the shuttle-box on the detecting beat of the lay.

7. In a loom, the lay, a shuttle-box thereon, a filling-detector movableacross the raceway of the lay adjacent the mouth of the shuttlebox asthe lay heats up, a fixed stand, a lon gitudinally movable, yieldinglycontrolled member mounted thereon transverse to the lay, and anon-metallic head on said memher, to engage the filling and clamp itbetween the head and the back wall of the shuttle-box on the detectingbeat of the lay.

8. In a loom, the lay, a shuttle-box thereon, a filling-detector movableacross the raceway of the lay adjacent the mouth of the shuttlebox asthe lay heats up, a yieldingly controlled member longitudinally movabletransversely to the lay, an adjustable head on the rear end of saidmember, and a yielding, n0n metallic cover for the head, to engage thefill-

